Finding the Fourth Proportional to 387,694,540, 581,546,874.12 and 128,909,760.58
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Solution
The fourth proportional to 387,694,540, 581,546,874.12 and 128,909,760.58 is: 193,366,324.71
Step by Step Solution
- Step 1: Write the proportion equation
387,694,540 : 581,546,874.12 = 128,909,760.58 : x - Step 2: Convert to fraction form
387,694,540/581,546,874.12 = 128,909,760.58/x - Step 3: Cross multiply
387,694,540x = 581,546,874.12 × 128,909,760.58 - Step 4: Simplify right side
387,694,540x = 74,967,068,308,856,592 - Step 5: Solve for x
x = 74,967,068,308,856,592/387,694,540 - Step 6: Final answer
x = 193,366,324.71
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.